公开(公告)号：US20100067549A1

公开(公告)日：2010-03-18

申请号：US12625722

申请日：2009-11-25

申请人： Yuji Nomura ,  Takeshi Yasuie

发明人： Yuji Nomura ,  Takeshi Yasuie

IPC分类号： H04J3/24

CPC分类号： H04L12/2854 ,  H04L29/12339 ,  H04L43/00 ,  H04L43/0829 ,  H04L61/2503 ,  H04L69/40

摘要： A device includes a storage unit that stores in a predetermined unit an identifier acquired from a packet transmitted from a transmitting device in association with a source address. The transmitting device receives from each terminal device connected communicatable via a network a packet including a source address, an identifier generated by adding a numerical value every time a packet is sent by the terminal device, and a session ID, and converts and transmits the source address. The transmitting device and the terminal device are connected to the device via a different network. The device also includes a determining unit that determines whether the identifier stored has monotonically increased; and a detector that detects a source indicated by a certain source address to be the transmitting device, if the determining unit determines that the identifier for the certain source address has not monotonically increased.

摘要翻译： 一种设备包括存储单元，其以预定单元存储从与源地址相关联的从发送设备发送的分组获取的标识符。 发送装置从各个终端装置接收通过网络通信的包含源地址的分组，通过在终端装置每次发送分组时增加数值而生成的标识符和会话ID，并将该源 地址。 发送设备和终端设备经由不同的网络连接到设备。 该设备还包括确定单元，其确定所存储的标识符是否单调增加; 以及如果所述确定单元确定所述特定源地址的标识符没有单调增加，则检测由某个源地址指示的源作为所述发送设备的检测器。

公开(公告)号：US20080080398A1

公开(公告)日：2008-04-03

申请号：US11788686

申请日：2007-04-20

申请人： Takeshi Yasuie ,  Yuji Nomura

发明人： Takeshi Yasuie ,  Yuji Nomura

IPC分类号： H04L12/28

CPC分类号： H04L45/18 ,  H04L12/462 ,  H04L43/50 ,  H04L45/00

摘要： A request-packet transmitting unit transmits a predetermined number of request packets having a non-unicast destination address that can be received by a target network including a network identified by a first network address, from a monitoring network identified by a second network address different from the first network address through a layer 3 relay device. A layer 2 loop detecting unit receives response packets corresponding to transmitted request packets through the layer 3 relay device, and detects a layer 2 loop in the target network based on number of received response packets and number of transmitted request packets.

摘要翻译： 请求分组发送单元从由不同于第一网络地址的第二网络地址识别的监视网络发送预定数量的具有可由包括由第一网络地址标识的网络的目标网络接收的非单播目的地地址的请求分组 第一个网络地址通过第3层中继设备。 层2环路检测单元通过层3中继设备接收与发送的请求报文相对应的响应报文，根据接收到的响应报文数量和发送的请求报文数量，检测目标网络中的二层环路。

公开(公告)号：US20070014232A1

公开(公告)日：2007-01-18

申请号：US11229717

申请日：2005-09-20

申请人： Takeshi Yasuie ,  Yuji Nomura

发明人： Takeshi Yasuie ,  Yuji Nomura

IPC分类号： H04L12/26

CPC分类号： H04L41/0677 ,  H04L41/12 ,  H04L43/0811

摘要： A network failure detection apparatus is realized as a function of a terminal in a network. The network failure detection apparatus transmits reachability confirmation packets to a terminal of search object. From a reachability condition decided on the basis of the receiving condition of response packets responding to the reachability confirmation packets, it is decided whether there is an L2 loop occurred on a path to the terminal of search object.

摘要翻译： 作为网络中的终端的功能实现网络故障检测装置。 网络故障检测装置向可搜索对象的终端发送可达性确认分组。 根据响应于可达性确认分组的响应分组的接收条件决定的可达性条件，判断在到达搜索对象的终端的路径上是否存在L2循环。

公开(公告)号：US20060013143A1

公开(公告)日：2006-01-19

申请号：US11077908

申请日：2005-03-11

申请人： Takeshi Yasuie ,  Yuji Nomura

发明人： Takeshi Yasuie ,  Yuji Nomura

IPC分类号： H04L12/56

CPC分类号： H04L12/66 ,  H04L45/18 ,  H04L47/12

摘要： A network looping detecting apparatus has an increased real-time operation capability for network looping detection and also has scalability. The network looping detecting apparatus has a count information acquiring unit for periodically acquiring count information which is counted up when the lifetime of a packet has elapsed, from a network device of a network to be monitored for network looping. The network looping detecting apparatus also has a looping detecting unit for detecting network looping from the count information. Specifically, the network looping detecting apparatus detects network looping based on the fact that when a packet loops due to network looping, the lifetime of the packet elapses, and the count information is counted up.

摘要翻译： 网络循环检测装置具有增加的用于网络循环检测的实时操作能力，并且还具有可扩展性。 网络循环检测装置具有计数信息获取单元，用于周期性地获取从分组网络的网络设备经过网络循环的网络的网络设备中计数的数据包的寿命。 网络循环检测装置还具有用于从计数信息中检测网络循环的循环检测单元。 具体地说，网络环路检测装置根据由于网络循环而在分组循环的情况下检测网络循环，使得分组的寿命过去，计数信息被计数。

公开(公告)号：US08724502B2

公开(公告)日：2014-05-13

申请号：US13532873

申请日：2012-06-26

申请人： Taichi Sugiyama ,  Takeshi Yasuie ,  Yuji Nomura

发明人： Taichi Sugiyama ,  Takeshi Yasuie ,  Yuji Nomura

IPC分类号： H04L12/26

CPC分类号： H04L61/2061 ,  H04L43/50 ,  H04L61/2557

摘要： A computer-readable medium stores a testing program that causes a computer having a storage device storing netmask lengths and address block utilization information associated with address blocks, to execute a process that includes acquiring first packets transmitted to a first apparatus, first addresses being regarded as transmission sources; referring to the storage device and acquiring a count of address blocks to which the first addresses belong and a netmask length; calculating based on the acquired address block count and netmask length, the netmask length less a bit count according to the number of the first addresses; referring to the storage device and selecting from among unused address blocks, an address block having a netmask length less than or equal to the calculated netmask length; and transmitting to a second apparatus, second packets obtained by setting the transmission sources of the first packets to second addresses in the selected address block.

摘要翻译： 计算机可读介质存储使具有存储设备的存储设备的计算机存储与地址块相关的网络掩码长度和地址块利用信息的测试程序来执行包括获取发送到第一设备的第一分组的处理，第一地址被视为 传输源 参考存储设备并获取第一地址所属的地址块的计数和网络掩码长度; 基于获取的地址块计数和网络掩码长度计算，根据第一个地址的数量，网络掩码长度减去一个比特数; 参考存储设备并从未使用的地址块中选择具有小于或等于所计算的网络掩码长度的网络掩码长度的地址块; 以及向所述第二装置发送通过将所述第一分组的发送源设置为所选地址块中的第二地址而获得的第二分组。

公开(公告)号：US08547826B2

公开(公告)日：2013-10-01

申请号：US12874613

申请日：2010-09-02

申请人： Yuji Nomura ,  Takeshi Yasuie

发明人： Yuji Nomura ,  Takeshi Yasuie

IPC分类号： H04L1/00

CPC分类号： H04L61/2046 ,  H04L29/12264 ,  H04L43/04

摘要： A monitoring apparatus for monitoring packet communication by a plurality of information processing apparatuses. The monitoring apparatus includes a receiving unit for receiving packets transmitted from the plurality of information processing apparatuses, a storage unit for storing a first identification value of a first packet and a first transmission source address of the first packet, and a processing unit for comparing a second identification value of a second packet with the first identification value of the first packet when a second transmission source address of the second packet matches the first transmission source address of the first packet to detect duplication of IP addresses when a difference between the first identification value and the second identification value exceeds a predetermined value.

摘要翻译： 一种用于监视由多个信息处理装置进行分组通信的监视装置。 监视装置包括：接收单元，用于接收从多个信息处理设备发送的分组;存储单元，用于存储第一分组的第一标识值和第一分组的第一发送源地址;以及处理单元，用于比较 当第二分组的第二发送源地址与第一分组的第一发送源地址匹配时，具有第一分组的第一标识值的第二分组的第二识别值与第一分组的第一识别值之间的差异匹配，以检测IP地址的复制 并且第二识别值超过预定值。

公开(公告)号：US08542601B2

公开(公告)日：2013-09-24

申请号：US12795493

申请日：2010-06-07

申请人： Takeshi Yasuie ,  Yuji Nomura ,  Tetsuya Nishi ,  Shunsuke Kikuchi ,  Taichi Sugiyama

发明人： Takeshi Yasuie ,  Yuji Nomura ,  Tetsuya Nishi ,  Shunsuke Kikuchi ,  Taichi Sugiyama

IPC分类号： G06F11/00

CPC分类号： H04L41/0677 ,  H04L41/12

摘要： An abnormality locating apparatus locates an abnormal location in a network. An abnormal location judging part judges a normality or abnormality of a link based on a normality or abnormality of an observation flow, by acquiring information of links through which each observation flow passes, from a network route information storage that stores passing route information of observation flows passing through the links. A diagnosis accuracy judging part judges that an accuracy of judging the normality or abnormality of a connecting link connected to a first node deteriorates, by acquiring links connected to each relay node as connecting links from a relay node connecting link information storage that stores connecting link information of each relay node, and judging that a relay node having all connecting links thereof that are abnormal is the first node having all observation flows passing therethrough that are abnormal.

摘要翻译： 异常定位装置将网络中的异常位置定位。 通过从存储观察流的路径信息的网络路径信息存储器中获取每个观察流通过的链路的信息，通过观察流的正常性或异常来判断链路的正常性或异常，异常位置判断部 通过链接。 诊断精度判定部判断通过连接到每个中继节点的连接作为来自连接链接信息存储器的连接链路来连接到第一节点的连接链路的正常或异常判断的准确性，连接链路信息存储器存储连接链接信息 并且判断其具有异常的所有连接链路的中继节点是具有异常的所有通过其的观察流的第一节点。

公开(公告)号：US08355341B2

公开(公告)日：2013-01-15

申请号：US12888591

申请日：2010-09-23

申请人： Taichi Sugiyama ,  Yuji Nomura ,  Takeshi Yasuie ,  Shunsuke Kikuchi

发明人： Taichi Sugiyama ,  Yuji Nomura ,  Takeshi Yasuie ,  Shunsuke Kikuchi

IPC分类号： G06F11/00

CPC分类号： H04L41/5035 ,  H04L43/0852

摘要： A CPU executes a process including determining a core node among plural relay nodes on a basis of route information, acquiring a first and a second packets flowing between a server and a terminal apparatus, the second packet being transmitted on a basis of the first packet, calculating a first delay time on a basis of the first and the second packets, the first delay time relating to packet transmission between the server and the terminal apparatus, transmitting a third packet to the core node, receiving a response to the third packet from the core node, calculating a second delay time on a basis of the third packet and the response, the second delay time being a delay time of the core node, and calculating a third delay time being a delay time of an end node on a basis of the first and the second delay times.

摘要翻译： CPU执行包括基于路由信息确定多个中继节点中的核心节点的处理，获取在服务器和终端装置之间流动的第一和第二分组，基于第一分组发送的第二分组， 基于第一和第二分组计算第一延迟时间，与服务器和终端装置之间的分组传输相关的第一延迟时间，向核心节点发送第三分组，从第一分组接收对第三分组的响应 核心节点，基于第三分组计算第二延迟时间和响应，第二延迟时间是核心节点的延迟时间，并且基于以下步骤计算作为终止节点的延迟时间的第三延迟时间： 第一和第二个延迟时间。

公开(公告)号：US20120240225A1

公开(公告)日：2012-09-20

申请号：US13357720

申请日：2012-01-25

申请人： Takeshi YASUIE ,  Yuji Nomura ,  Taichi Sugiyama

发明人： Takeshi YASUIE ,  Yuji Nomura ,  Taichi Sugiyama

IPC分类号： G06F21/24

CPC分类号： G06F21/44 ,  G06F2221/2119 ,  G06F2221/2129 ,  G06F2221/2149 ,  H04L63/0861

摘要： A verification apparatus for verifying a verified apparatus corresponding to a first apparatus included in a plurality of information processing apparatuses includes a storage and a processor. The storage stores captured data acquired by capturing data transmitted and received among the plurality of information processing apparatuses. The processor receives first data transmitted from the verified apparatus. The first data is destined for a second apparatus included in the plurality of information processing apparatuses. The processor extracts, from the storage, second data transmitted from the second apparatus in response to third data transmitted from the first apparatus to the second apparatus. The third data corresponds to the first data. The processor transmits the extracted second data to the verified apparatus.

摘要翻译： 用于验证与包括在多个信息处理设备中的第一设备相对应的验证设备的验证设备包括存储器和处理器。 存储器通过捕获在多个信息处理设备之间发送和接收的数据而获取的捕获数据。 处理器接收从验证装置发送的第一数据。 第一数据指定给多个信息处理装置中包括的第二装置。 处理器响应于从第一装置发送到第二装置的第三数据，从存储器提取从第二装置发送的第二数据。 第三数据对应于第一数据。 处理器将提取的第二数据发送到经验证的装置。

公开(公告)号：US08213325B2

公开(公告)日：2012-07-03

申请号：US12353068

申请日：2009-01-13

申请人： Yuji Nomura ,  Takeshi Yasuie

发明人： Yuji Nomura ,  Takeshi Yasuie

IPC分类号： H04L12/26

CPC分类号： H04L43/0829

摘要： A packet analysis apparatus analyzes content of communication obtained as a result of monitoring or capturing a packet passing through a network. The apparatus has a unit of acquiring source or destination address information from a network layer packet header. The apparatus has a unit of acquiring from the network layer packet header an identifier for which a value that increases monotonously with each sending for each source or destination address information is set. The apparatus has a unit of searching and acquiring an identifier corresponding to address information in a current packet from a storage part holding an identifier in a previous packet corresponding to source or destination address information. The apparatus has a unit of comparing the identifier in the previous packet acquired and the identifier in the current packet and determining that reordering occurs when the identifier in the current packet is smaller.

摘要翻译： 分组分析装置分析作为监视或捕获通过网络的分组的结果而获得的通信的内容。 该装置具有从网络层分组报头获取源或目的地址信息的单元。 该设备具有从网络层包头获取标识符，该标识符针对每个源或目的地地址信息针对每个发送单调递增的值。 该装置具有搜索和获取对应于当前分组中的地址信息的标识符，该存储部分保存与源或目的地址信息对应的先前分组中的标识符。 该装置具有比较当前分组中获取的先前分组中的标识符和当前分组中的标识符的单元，并且当当前分组中的标识符较小时确定重新排序。